Mr. Schmidt has sought to cut down on Mr. McCain’s use of his cellphone and limit the people who have regular access to Mr. McCain in an effort to keep him more focused, advisers said. He has been the impetus for an effort by Mr. McCain to limit sharply his engagements with reporters, the kind of freewheeling encounters that Mr. McCain enjoys — and that helped him charm the news media for years — but that often lead him to veer from his campaign’s message of the day.Emphasis mine
In addition it looks like he is also being sent to bed early.
don't know if you like this much detail -- if I can sleep in to about 7:30 or 8, then it really helps me. When I get up real early, like 5:30 or 6, then, you know, you don't go to bed until 10, 10:30 or 11 -- it seems to help me to get up a little later in the morning.
His staff is treating him like a wayward 14 year old or a more apt comparison, a slight senile grandfather who regally had to be reminded to zip up after a trip to the bathroom.
Election 2008, McCain